引进美国GEM材料的抗玉米青枯病和丝黑穗病种质资源筛选鉴定

近年来,青枯病、丝黑穗病上升为我国玉米生产中的主要病害,挖掘新的抗病资源,进行抗病育种是解决病害威胁的根本所在。本研究对引进的美国GEM材料进行了接种条件下的抗病性鉴定,并结合抗病材料的多年重复验证,筛选出一批新的抗病种质资源。这些材料的深入研究和广泛应用,对拓宽我国玉米青枯病、丝黑穗病抗性遗传基础,增加种质资源遗传多样性具有重要利用价值。

Resistant Identification of Stalk Rot and Head Smut for Introduced U.S. GEM Germplasm in Maize

During recent years, stalk rot and head smut have becoming two of the major diseases for the maize production in China. It was turned out that the disease-resistant breeding was the most effective approach to resolve the disease problem by the discovery and application of newly resistant germplasm. In this study, a set of resistant germplasm from introduced U.S. GEM materials for stalk rot and head smut were identified and selected under the condition of repeated inoculation, which was meaningful to the enhancement of disease-resistant maize germplasm of China.